Installing a Sony CDX-GT09 in a 2002 VW Jetta- power, no sound

not told why (the job) rats eat the wires or what?
no country of vin told
nor which of 5 to 10 audio head engine sound system radios
is there now or if aftermarket not from Jetta VW
the USA car this wiring is in the service manual
but is 1 or more page for each of 5 to 10 radios VW used
see???????????
ours are here

https://eautorepair.net/Marketing/Default.asp

welcome to WWW wide world web, where anyone can post
then fails to tell country or VIN, and is 99% of the post here
and the all time reason for wrong answers./
for cars here we
for newer radio
we use these

https://www.scosche.com/car-audio/installation/harness

check your radio fuses

Did you get the answer? I am having the exact same problem with my Jetta.

Removing the battery connection for this procedure will cause diagnostic trouble codes to be stored in the engine control module. Erasing these DTCs and resetting the readiness code will require Volkswagen scan tool VAG1551/1552 or equivalent. The same results will occur when disconnecting engine management components while the key is in the on position. Some driveability problems may be noticed until the system re-adapts to operating conditions. OBD II readiness codes, which may be required for emissions testing, may also be erased. Convenience electronics (alarm systems, interior light control, power locks, mirrors, and windows) may need to be re-set using a VAG 1551/1552 or equivalent sacan tool.

You'll an stereo install kit. I comes with the surround for the new stereo to fit into, and that will fit into the space for the stereo in the dash, this kit will also have a connector to wire the new stereo to, and plug into the stock stereo plugs.

look for a small reset button and hold it for 20 secons and it should be on again

Chk. for a poor connection wear entenna plugs into radio, it could have corrosion or it could just be loose.

Pull fuse 14 and reinsert.

There is also an inline fuse in back of the radio itself.

CHECK TO SEE IF MUTE IS ON

I have come to find out that in the 90's auto makers started installing factory amplifiers in their cars so they could use low wattage stereos in the dash. It's usually a blue wire off the stereo that runs the amp, maybe it couldve become disconnected? I also know that even if you put in an after market stereo, this wire must be hooked up or you'll get no sound from the speakers. hope this helps.